Reorganize and group modules

data/calculator/.gitignore

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+/build

data/calculator/build.gradle.kts

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+plugins {
+    id("com.android.library")
+    id("kotlin-android")
+}
+
+android {
+    compileSdk = sdk.versions.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = sdk.versions.minSdk.get().toInt()
+        targetSdk = sdk.versions.targetSdk.get().toInt()
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles("consumer-rules.pro")
+    }
+
+    buildTypes {
+        release {
+            proguardFiles(
+                    getDefaultProguardFile("proguard-android-optimize.txt"),
+                    "proguard-rules.pro"
+            )
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    namespace = "de.mm20.launcher2.calculator"
+}
+
+dependencies {
+    implementation(libs.bundles.kotlin)
+    implementation(libs.androidx.core)
+    implementation(libs.androidx.appcompat)
+
+    implementation(libs.bundles.androidx.lifecycle)
+
+    implementation(libs.mathparser)
+
+    implementation(libs.koin.android)
+
+    implementation(project(":core:base"))
+
+}

data/calculator/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.kts.kts.kts.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

data/calculator/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    /
+</manifest>

data/calculator/src/main/java/de/mm20/launcher2/calculator/CalculatorRepository.kt

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+package de.mm20.launcher2.calculator
+
+import de.mm20.launcher2.search.data.Calculator
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.channelFlow
+import kotlinx.coroutines.withContext
+import org.koin.core.component.KoinComponent
+import org.mariuszgromada.math.mxparser.Expression
+
+interface CalculatorRepository {
+    fun search(query: String): Flow<Calculator?>
+}
+
+class CalculatorRepositoryImpl : CalculatorRepository, KoinComponent {
+
+
+    override fun search(query: String): Flow<Calculator?> = channelFlow {
+        if (query.isBlank()) {
+            send(null)
+            return@channelFlow
+        }
+
+        send(queryCalculator(query))
+    }
+
+    private suspend fun queryCalculator(query: String): Calculator? {
+        return when {
+            query.matches(Regex("0x[0-9a-fA-F]+")) -> {
+                val solution = query.substring(2).toIntOrNull(16) ?: run {
+                    return null
+                }
+                Calculator(term = query, solution = solution.toDouble())
+            }
+
+            query.matches(Regex("0b[01]+")) -> {
+                val solution = query.substring(2).toIntOrNull(2) ?: run {
+                    return null
+                }
+                Calculator(term = query, solution = solution.toDouble())
+            }
+
+            query.matches(Regex("0[0-7]+")) -> {
+                val solution = query.substring(1).toIntOrNull(8) ?: run {
+                    return null
+                }
+                Calculator(term = query, solution = solution.toDouble())
+            }
+
+            else -> {
+                withContext(Dispatchers.IO) {
+                    val exp = Expression(query)
+                    if (exp.checkSyntax()) {
+                        Calculator(term = query, solution = exp.calculate())
+                    } else {
+                        val exp2 = Expression(query.replace(',', '.').replace(';', ','))
+                        if (exp2.checkSyntax()) {
+                            Calculator(term = query, solution = exp2.calculate())
+                        } else null
+                    }
+                }
+            }
+        }
+    }
+}

data/calculator/src/main/java/de/mm20/launcher2/calculator/Module.kt

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+package de.mm20.launcher2.calculator
+
+import org.koin.dsl.module
+
+val calculatorModule = module {
+    single<CalculatorRepository> { CalculatorRepositoryImpl() }
+}

data/calculator/src/main/java/de/mm20/launcher2/search/data/Calculator.kt

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+package de.mm20.launcher2.search.data
+
+import de.mm20.launcher2.search.Searchable
+import java.text.DecimalFormat
+import java.util.*
+import kotlin.math.abs
+import kotlin.math.roundToInt
+
+data class Calculator(
+    val term: String,
+    val solution: Double
+): Searchable {
+
+    val formattedString: String
+    val formattedBinaryString: String
+    val formattedHexString: String
+    val formattedOctString: String
+
+    init {
+        if (solution.isNaN()) {
+            formattedString = "NaN"
+            formattedOctString = "NaN"
+            formattedBinaryString = "NaN"
+            formattedHexString = "NaN"
+        } else {
+            val nf =
+                if ((abs(solution) > 1e12 || abs(solution) < 1e-5) && solution != 0.0) DecimalFormat(
+                    "#.######E0"
+                )
+                else DecimalFormat("#,###.######")
+            formattedString = nf.format(solution)
+            var s = StringBuffer(solution.roundToInt().toString(2))
+            while (s.length % 4 != 0) {
+                s = s.insert(0, '0')
+            }
+
+            for (i in s.length - 4 downTo 4 step 4) {
+                s.insert(i, ' ')
+            }
+            formattedBinaryString = s.toString()
+
+            s = StringBuffer(solution.roundToInt().toString(8))
+            while (s.length % 3 != 0) {
+                s = s.insert(0, '0')
+            }
+
+            for (i in s.length - 3 downTo 3 step 3) {
+                s.insert(i, ' ')
+            }
+            formattedOctString = s.toString()
+
+            s = StringBuffer(solution.roundToInt().toString(16).uppercase(Locale.getDefault()))
+            while (s.length % 2 != 0) {
+                s = s.insert(0, '0')
+            }
+
+            for (i in s.length - 2 downTo 2 step 2) {
+                s.insert(i, ' ')
+            }
+            formattedHexString = s.toString()
+        }
+    }
+
+    fun getBeatifiedTerm(): String {
+        if(term.matches(Regex("0x[0-9a-fA-F]+"))) {
+            return term.substring(2).uppercase(Locale.ROOT) + "₁₆"
+        }
+        if(term.matches(Regex("0b[01]+"))) {
+            return term.substring(2) + "₂"
+        }
+        if(term.matches(Regex("0[0-7]+"))) {
+            return term.substring(1) + "₈"
+        }
+        return term.replace(Regex("\\s+"), "")
+            .replace("pi", " \u03C0 ", ignoreCase = true)
+            .replace("*", " \u00D7 ")
+            .replace("-", " \u2212 ")
+            .replace("/", " \u2215 ")
+            .replace("+", " + ")
+            .replace(Regex("&{1,2}"), " \u2227 ")
+            .replace(Regex("\\|{1,2}"), " \u2228 ")
+            .replace("!=", " \u2260 ")
+            .replace("<>", " \u2260 ")
+            .replace(">=", " \u2265 ")
+            .replace("<=", " \u2264 ")
+            .replace("=", " = ")
+            .replace("<", " < ")
+            .replace(">", " > ")
+    }
+}